SpringCloud中注册中心Euraka的服务搭建和服务提供者和消费者的搭建

1、Springcloud注册中心环境搭建 euraka

2、服务的注册与发现

3、SpringCloud客户端调用  rest、feign、客户端调用工具

ribbo（负载均衡）

zuul接口网关

 

环境搭建：首先确认springboot和springCloud的版本关系，版本不对，启动不起来，pom.xml只要配对了，剩下的很快就能搞定。

流程：首先搭建起来注册中心，注册中心可以通过localhost：8080打开一个网页，然后启动服务提供者和消费者的时候会注册到注册中心，服务的提供者也可以作为消费者，都可以向注册中心请求服务。

 

1、首先我们需要有三个项目 ，一个注册中心项目（相当于zookeeper），一个服务提供者、一个消费者

2、导入依赖

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

     <modelVersion>4.0.0</modelVersion>

     <parent>

           <groupId>org.springframework.boot</groupId>

           <artifactId>spring-boot-starter-parent</artifactId>

           <version>1.5.4.RELEASE</version>

           <relativePath/> <!-- lookup parent from repository  -->

     </parent>

     <groupId>com.jisp</groupId>

     <artifactId>euraka</artifactId>

     <version>0.0.1-SNAPSHOT</version>

     <name>euraka</name>

     <description>Demo project for Spring Boot</description>

     <properties>

           <java.version>1.8</java.version>

            <!-- springcloud的版本必须和springboot的版本对应 -->

          <spring-cloud.version>Dalston.SR1</spring-cloud.version>

     </properties>

     <dependencies>

            <!-- springboot依赖 -->

           <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

            <!-- euraka注册中心依赖 -->

           <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-starter-eureka</artifactId>

           </dependency>

           <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-starter-ribbon</artifactId>

           </dependency>

           

           

           <dependency>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-starter-test</artifactId>

                <scope>test</scope>

           </dependency>

     </dependencies>

     <dependencyManagement>

           <dependencies>

                <dependency>

                     <groupId>org.springframework.cloud</groupId>

                     <artifactId>spring-cloud-dependencies</artifactId>

                     <version>${spring-cloud.version}</version>

                     <type>pom</type>

                     <scope>import</scope>

                </dependency>

           </dependencies>

     </dependencyManagement>

     <build>

           <plugins>

                <plugin>

                     <groupId>org.springframework.boot</groupId>

                     <artifactId>spring-boot-maven-plugin</artifactId>

                </plugin>

           </plugins>

     </build>

     <repositories>

           <repository>

                <id>spring-milestones</id>

                <name>Spring Milestones</name>

                <url>https://repo.spring.io/milestone</url>

           </repository>

     </repositories>

</project>

 

2、对项目进行配置，每一个项目启动端口应防止冲突

注册中心配置

server:

  port: 8888

eureka:

  instance:

    hostname: localhost

  client:

    registerWithEureka: false

    fetchRegistry: false

    serviceUrl:

      defaultZone:  http://${eureka.instance.hostname}:${server.port}/eureka/

服务提供者配置

#项目端口

server:

  port: 8761

#注册中心地址配置，便于服务提供者注册

eureka:

  instance:

    hostname: localhost

  client:

    serviceUrl:

      defaultZone:http://localhost:8888/eureka/

#服务的名称会显示在注册中心

spring:

  application:

    name: service-member

      

服务消费者配置

#项目启动端口，每个项目的端口应该不同，防止冲突

server:

  port: 8764

#注册中心配置

eureka:

  client:

    serviceUrl:

      defaultZone:http://localhost:8888/eureka/

#项目应用名称，方便注册中心寻找

spring:

  application:

    name: service-order

3、三个项目启动类

注册中心

@EnableEurekaServer

@SpringBootApplication

public class EurakaApplication {

     public static void main(String[] args) {

           SpringApplication.run(EurakaApplication.class, args);

     }

}

服务提供者

@EnableEurekaClient

@SpringBootApplication

public class EurakaApplication {

     public static void main(String[] args) {

           SpringApplication.run(EurakaApplication.class, args);

     }

}

服务消费者

@EnableEurekaClient

@SpringBootApplication

public class EurakaApplication {

     public static void main(String[] args) {

           SpringApplication.run(EurakaApplication.class, args);

     }

     

     @Bean

     @LoadBalanced

     RestTemplate restTemplate() {

           return new RestTemplate();

     }

}

4、然后服务提供者和服务消费者都写个controller类

服务提供者

@RestController

public class EurakaServer {

     @RequestMapping("/getUserList")

     public List<String> getUserList() {

           List<String> listUser = new ArrayList<String>();

           listUser.add("zhangsan");

           listUser.add("lisi");

           listUser.add("yushengjun");

           return listUser;

     }

}

服务消费者

@RestController

public class MemberService {

     

     @Autowired

     RestTemplate restTemplate;

     

     @RequestMapping(value="/getOrderByUserList")

     public List<String> getOrderByUserList() {

           return  restTemplate.getForObject("http://service-member/getUserList",  List.class);

     }    

}

5、进行测试

http://localhost:8888

http://localhost:8761/getUserList服务提供的接口

http://localhost:8764/getOrderByUserList服务消费者接口，在业务层通过注册中心进行了远程接口的调用。也得到了数据。